多項選擇題Which two multicast address ranges are assigned as source-specific multicast destination addresses and are reserved for use by source-specific applications and protocols?()

A.232.0.0.0/8
B.239.0.0.0/8
C.232.0.0.0/4
D.FF3x::/32
E.FF2x::/32
F.FF3x::/16


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A.IPsec site-to-site VPN
B.Cisco AutoSecure
C.Cisco IOS Firewall
D.IPS

2.單項選擇題What are the "bound IP addresses" used for in LDP?()

A.For each such address and mask /32, one label binding is created.
B.As the TCP endpoint, IP addresses are used by the LDP session.
C.These addresses are used to find the label binding to put in the LFIB, by looking up these IP addresses in the routing table.
D.These addresses are used for penultimate hop popping (PHP) when forwarding packets to the next router directly. 

5.單項選擇題What is the STP root guard feature designed to prevent?()

A.a root port being transitioned to the blocking state
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D.a root port being transitioned to the forwarding state

6.單項選擇題f a Cisco switch is configured with VTPv1 in transparent mode, what is done with received VTP advertisements?()

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C.The changes within the advertisements are made to the switch’s VTP database.
D.The contents are ignored and they are forwarded out all trunking ports.

7.多項選擇題Which two attributes need to match for two switches to become members of the same MST region?  ()

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9.多項選擇題Which three statements are true about policing? ()

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B.It causes TCP retransmits.
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10.單項選擇題Which one of the following potential issues is eliminated by using split horizon?()

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